You may know linear momentum is given by
P= mass.velocity.
Initially car is moving with some velocity so you know initial momentum of the car. Finally it comes to rest i.e final momentum of the car is 0. According to Newton's second law : Force = change in momentum /time. Applying this you'll get answer as 642840N. Hope it helped you. Revert back to me if you have any questions. Please check out the calculation it might be wrong!
It stays constant, because it's using that energy to change state
The kinetic energy (KE) is 250 J and the gravitational potential energy (GPE) is 392 J
Answer:
D. the rate at which work is accomplished
Explanation:
